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我国从2005年开始固体火箭运载动力技术预研工作

2015-09-29 11:17:57   环球网

原题:他们,为固体动力发展默默耕耘

——记我国固体火箭发动机型号研制团队事迹

【环球军事/航空报道】2015年9月25日,采用固体燃料发动机的我国新型运载火箭长征十一号在酒泉卫星发射中心发射,成功将4颗微小卫星送入太空,这是长征十一号的首飞,使我国具备快速发射卫星的能力。八年磨一箭,中国航天科技集团公司四院几代人的梦想变成了现实,成功的背后,离不开长期以来研制团队的默默付出。

张士林,一位在航天科研管理岗位默默奋斗了一辈子的航天老将,临危受命担任该型号长征十一号固体运载火箭发动机总指挥,雷厉风行的作风,干任何事都考虑的十分到位,研制各项工作安排的有条不紊。“跟张总一起干活心里舒坦、有底”,研制团队的成员都喜欢和他一起工作。型号成功之时,也是他即将退休之际,也为他职业生涯最高峰划了一个句号。

该型号发动机总设计师王建儒,从2005年开始,就致力于固体运载动力技术方面的预先研究工作,先后负责完成了多项固体运载动力技术的立项论证和研究工作。此后,他担任大推力固体发动机主任研究师,负责完成我国首台大推力固体发动机的设计、技术攻关和试验验证工作,并圆满完成了地面热试车,实现了我国大推力固体火箭发动机的关键技术的实质性突破,填补我国大推力固体运载发动机的技术空白,有力推动了该型长征十一号固体运载火箭的国家立项。

赵东民是型号的四级发动机总体设计师,干起活来比年轻人还拼。从去年底开始,没日没夜地做方案、计算分析,进入了“疯狂加班模式”,有时候直接在办公室通宵伏案计算一夜。“赵师傅一直有些不舒服,不能过度劳累,可每次任务一来他就什么都不顾了。这次住院,还是他硬抗了几天,实在受不了才住进去。” 提到他的故事,团队里的年轻人们满脸敬佩地“点赞不停”。住院期间,听说发动机交付时出现了问题,躺在病床上的赵东民心急如焚,一个个电话不停地打给现场询问、沟通,最后还是没忍住,拔下针就急急忙忙开车赶回厂房。事后他说,这是他负责的东西,还是自己最清楚最熟悉,出了问题得亲自解决才安心。

大尺寸薄壁壳体热处理难度大、质量及尺寸精度控制难,为确保产品设计、成型一次成功,团队里的每个人都付出着、也牺牲着。年轻设计师张卓勋,为掌握更深入的掌握最直接的工艺知识,坚持到装药厂生产一线学习、跟产达三个月。本和女友定好了去年结婚的他,婚期却撞上了产品验收,为了全力以赴保证交付顺利,年轻小伙回家做了女友的思想工作,硬是将婚礼推迟了近半年。今年五月刚办完婚礼,在家老家没待两天,又马不停蹄回到单位投入工作。妻子怀孕,而他正处在最忙的时期,难以好好照顾,八月份,又踏上了去靶场的路,对妻子的亏欠只能埋在心里。

壳体最长,喷管最大,进度最紧,柔性接头超大,面对“三最一超”的困难和挑战,以及产品研制加工中的技术难题,四院大胆创新,首次采用车、铣、镗复合加工模式,使无超深地坑难题得到有效解决。第一次采用100T旋压机进行立式旋压,旋出长度符合壳体研制要求的圆筒,实现了大型超长圆筒旋压的新突破。柔性接头采取数控加工,实现了超大法兰、增强件的数控成型,实现了该领域加工技术的新突破。

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